99+ also have different intake and camshafts to go with the PI heads. I believe you actually end up with a little more hp than a 99+ when you do the swap because you end up with slightly higher compression. Do a search of previous posts - there are some folks on here who have done the swap and who know where to get the parts for the best price.
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Strike down the unroadworthy!
2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more
'94 Rio Red Cobra: All the bolt-ons, 3.73s
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